Abstract:When the stress monitoring is used to evaluate the highway rock slope stability, the problem to determine the variable regularity of stress and warning value appears. A case study was made of a typical slope along Guang shaan Expressway to research the problems with the method of centrifugal model test and field test. The model test results show that the model test get the variable regularity of stress before failure, the variable curves are fitted with the power function, and the method of warning percentage is adopted to determine the warning value area. The field test results show that centrifugal model test results can be applied to evaluating the highway rock slope stability with stress monitoring；in the course of the stress monitoring, the researcher should notice the influence of the surrounding environment on slope.
